Regulating device



May 15, 1923.

1,455,337 D. s. JAcoBus l v REGULATI NG DEVI CE omglnal Filed Dec. v14,191ev 2 Sheets-Sheet l JNVENTOR.

,BY 2W fw ATTORNEYS.

D. s. JACOBUS REGULATING EVICE Original Filed Dec. 14, 1916 2Sheets-Sheet 2 I' f2, T l-E-Z-- IN V EN TOR.

n A BY 4%Mvw ATTnRArn/c Patented May i5, i923.

TA LES DAVID sJACoBUs, or JERSEY CITY, NEW JERSEY,- iisfsief'iioieTolirnniiiioooirjaf WILooX COMPANY, oFvBaYoNNE, NEW annsnv, A CORPORATIONQENEW REGULATINGnnvIcEg.

oiiginai appiicatiqii mea December i4, 191e, serial No.i3e,a32.-niviiied anims appiiclation niet sep'- L temberfi, 191e. fserial No, 252,551.`

To all whom tmag/ concern l Beit known that I, DAVID S. JAcoBUs, a

citizen of the United States, residing in kler-` i sey City, in thecounty of Hudson and Statev of New Jersey, have vinvented certain newand usefullmprovementsin Regulating- De-l vices, disclosed in thefollowing specification.'

My invention is disclosed in my prior Patent No.`1,328,997 grantedJanuary 27, 1920,v

' and of which the division, y

My invention relates to a regulating de- `present application is a vicein which an actuating member, which 4is preferably operated by fluidpressure', is

controlled by va iiuid pressure operated controlling device. lvhaveillustrated my invenfv 'tion in connection `with a system that regulatesthe temperature of sup'erheated steam, `the regulator mechanism beingresponsive to the temperature l'of the steam. `It is to be understood,however, that my invention is equally applicable to any system iii-whichtherev is a variable pressure,and in which it is desired to actuate aregulating `device in response to such pressure variations. Oneapplication of'my present invention isillustrated in my prior Patent No.1,328,997

where the power-actuated member is shown connected to doors in asupeiheater setting, by which the amount of superheat is controlled orregulated.

` ln'the drawings which illustrate one embodiment of my invention, Fig.lis a1 diagrammatic view illustrating` the principle of operationofmyinvention, and Fig. 2`is a side view, mainlyy in section, showingdetails otedy to a leverv 9 'having its -fulcrum at .10.

The lever is normally depressed `by aspring y of the valve and partsassociated therewith ffor controlling the admission of fluid to apower-operated cylinder.

'vapor pressure generatedy in the container isl utilizedto set inoperation certain mechal,nisms to,l limit the vtemperature within thesuper-heater setting and thus limit' the degree'. of superheatj For thepurpose of ex` In thepadaptation, hereinafter described,

plainingthe .principle of operationof my v ention, l have shownlavdiagrammaticary 155 rangementv in Fig. l inwhich thenumeral 1designates a portion ofthe".superheated`v steam main. Within this main`is afeontainer" in the form of acoiled pipe 2 closedk tothe steam andcontaining a volatileliquidsuch. `as water,v alcoholl or 'mercury having`a Vfixed boiling point for a givenl pressure;- T he con-:1,` ,A f

tainer may have any appropriate form `which l f will insure an'effective impingement. ofthe superheated steam andra` relatively.. largeheating surface with the proper rinter'nal. volume. The upper end ofthe` coil 2 islfs'e-.i

-cured in an opening inthe` cap 3 v ;losing'f"ithe end of the steammain, said cap'f'h'a'ving a chamber 41 from which'ja pipe leads to aregulator. The coil2 is only partially filled with liquid,jthe"spa`ceabove thi-illiolu'idbe-l 'j ing filled with vapor, the pressure `of:which .corresponds to thetemperature to which the liquid is` heated bythe superheated steam.

The controlling mechanismv comprises s a chamber 6 having a flexiblediaphragmgk7 upon whichdiaphragmv rests a idisc8'." When lwater is usedasl the liquid infthe coiledspipe p 2 the chamber 6 is filled with waterupon the surface of which oil is placed to prevent cor rosion of thediaphragmL 7, which is preferi ably of hardened steel.4 For agive'niste'am temperature passing over the coil 2 there will l' g be 'a'given vapor pressure transmitted4 to the chamber 6. `This pressureacting supon" the under side ofthe diaphragm 7"is" trans' mitted'through the followingm'echanisineff The post'wliichfbears on the1disc-8`ispiv-y" 905- '11 connecting the same to the frame.v The .i

j Listing 'the controlling mechanism to operate*` at anyV desiredpressure. The upward move.- g

ment of the lever 9 is preferably limited by means of avstop' 12.V Thefree end of theleve'r 9 is connectedbya stem 13 .togava'l've l'whi'ch ivalve controls the admission offfluidfrom air, y inlet pipe 1`5"to a'passagefland a chamberl7 within the valVe'CaSing', whichfchainvbei".communicates with the motorcylinder 18. The motor piston 19 is connectedb`y a 'piston' y ioo g `rod 2O `to a actuated member or lever i 21 vfor'operating. aregulator, the same ybeing f fulcrumed at 22V on a link 23.They lever l21 is vpreferably counterweighted at 24 and is "connected toa rodV 25 the fmover'nents vof which are utilized tocontrol thetemperature of the superheated steam, as more yiully y.disclosed yin myvprior application, which control VImay Abe effected by y admitting airi' .10

around the superheater. The power actuated member or lever 21, which isactuated by the piston 19, is thus kgoverned vbyfa controlling mechanismactuated. by fluid pressure.

g VThe action of the controlling n iechanisml above vdescribed is tocause the vapor pres sure" generated in coil 2 to actthrouglr the ivmechanism 'in sucha manner that when ;for whichy the apparatus. isset,thek lever [by admit .water under pressure to the working side of thepistony 19. y`When the piston.

-1'9f-is movedthe power lever21 will be. cor

1`respondi-ngly mov'edand thereby the rod 25, lthe.niovernent of whicheffects a reduction in the ytemperature oi`V .the superheated steam,

i' f asfully' disclosed in my priorY application.

l".'Inithe arrangement shown in my prior application, whenthetemperature of the f steam is vkreduced below that at which theapparatus is set, the/valve corresponding :to-y. the valve 14' was movedto its seat by the spring 11.. In the practical application oftheapparatus shown in Figures 1 to 8` of the device shown vin thatapplication,

. however, it'. was found that-the doorsfor `admitting vair into thesetting kwould not at.

alltimes closeuntil after the temperature .of the superheated steamhadlfallen aconsiderable amount below that at which the .doors wereopened. This was due to the use of an unbalanced valve and `frictionlosses,

For example, if thedoors' openedwhen thev `effi-5000711". they wouldsometimes fail to superheated steam reached' a temperature close beforethe temperature had fallen to 475 F.. Under most conditions ofoperarltion as an emergency device this falling of the temperature ofthe superheated steam `belowthat at which they doors are opened is notobjectionable, as 'the ,fireman or attendant ,can readily press down theleverl `,9 afterthe superheated steam .hasybeen re-. duced to thedesired degreeand thus bring the apparatus toits initial condition in iy.which it will remain untilr the temperature (of the steam flowing overthe coil 2 again :reaches the temperature tofwhich the apkparatus 1sset. Y y. y In accordance with my presentinvention 'provision is madefor rinsing the doors which 'adm-it air to the setting immediatelyAafter the. temper-attirent thevsteram flowingv over the coil 2 fallsbelow that at which the apparatus the lever 9, the valve le normallyclosing the 'rend oi the water inlet 15. Vhen the valve is opened waterlflows throughpas sage 16 raising ball-valve 26,- th'ence into. j the,chamber 17, from which the water is admitted into the power'cylinder 18.During the time that the valve 1li is open and [the vpiston 19 isdescending, a poi-tion of the water from chamber 17 flows through thevoutlet 27 into waste pipe 28Min a manner similar. toU that .disclosedin, my priorv ap,- plication, the duct opening. being controlled byvalve 27. Thefvalve. casingis formed is sa. nl this construction thevalve Ispindle 13 is connected to the end. ofl

with a verticalchannel 29 which commun nicates with thed chamber 30 inwhich the valve moves, through a duct 31 leading from the lower part ofthe chambery andwc'on trolled` by a valve 32. That portion of channel 29which isbelow duct 31 iscon-l nected by a pipev33 with a power cylinder18, said. pipe entering the cylinderfat a point which causes it .tobesclofsed ,by the piston on its downward .move-ment. Thel lower end of'the cylinder is closedby a vhead 3d, and a drainpipe 35 connects thecylinder with the waste-pipe 28. The upper end ofv channel` 29 .aboveduct 31 is l.connected by a duct 36 with .thegchamber v,3Tin the whichis secured to valve-stem .13.

`When the temperature of the .superheated steam flowingV over coil 2reaches'thatfat which the apparatus isset to-v operate, lever 9 will be`raised, thereby opening Valve 1liA to admit water'underpressure'to thepower ,95 y valve casing. aboveV an auxiliary. piston v'385,

piston, as before described. yWhen wateris admitted to chamber 30 aportion of it flows through duct 31 to the two branches of Vchannel 29'.That portion fio-wing through' the..

lower branch is conducted by pipe 33 tothe lower part of cylinder 18 sothatduring theA I c. descent of the cylinder,l so long asftheoutlet ofpipe 33 remains open, the water solfadmit.- ted will escape through thedrain connection 3,5. to waste-pipe 28. The` water which flows throughthe upper part offchannel 29is conducted through duct36l to the chamber37 i' above piston 3S. There is, however,y acomparatively low pressurein the'l upper parteiy channel29during the time that water flows :freelythrough pipe When pliston'19 reaches thev end of its 'downward stroke itcovers. the opening from f pipe 33, thereby f stopping the flow ofvwater through saic'llpiper` and causingthe'water to flow Ithrough'nthe'upper part of channel 29 to .chamber`37,ithe v upward movement of piston38not having been suliicient v to vcloserv completely yduct f3.6..VVhenthe pressure infchamben3,7becomes great enough toovercomethefre'sistancefof valve 11i and the parts vassociatedtherewith,I

and provided the temperature` .of the superhcated steam flowing overcoil 42 is such that 1,455,337 i y i y3 there is not too greatianunbalanced force v tending to maintain the lever 9 in its upper i partsthat effect the opening of the valve 14 will be restored to normalposition, that is, the valve 14 will be automatically closed as soon asthe piston 19 reaches the limit of lits downward stroke and the pistonwill return to its original position at the top of the power cylinder ifthe temperature of ythe superheated steam. flowing over the coil 2 doesnot exceed the limit for which the apparatus is set, thus closing thedoors in the setting through the system of levers connected to piston19', as more fully disclosed in my prior application. Valve 14 will thenremain closed until the temperature of the superheated steam flowingover 'coil 2 eX- ceeds the limit for which the apparatus is set. If,therefore, the opening of doors for admitting air into the setting, orthe manipulation of dampers, as more fully described in my priorapplication, causes the temperature of the steam flowing over coil 2 tobe reduced to the required degree, valve 14- will r'emain closed and thepower piston will return to its normal position, thus closing the airadmission doors.

If the temperature .of the superheated steam fiowingover the coil 2still exceeds the limit for which the apparatus is set when the piston19 reaches the limit of its downward stroke, the piston 19 will start toreturn to its original position, but immediately the opening into thecylinder at the discharge end of the pipe 83 is opened and the pressureis suiiiciently'lowered in the pipe 33, the valve 14 will be opened bythe lever 9 and the power piston 19 will be forced downward. Forcing thepower piston downward will again close` the opening into the cylinder atthe discharge end of vpipe 33, which will again cause the piston toyrise. As long, therefore, as the temperature of the superheated steamflowing over the coil 2 is in excess of the limit for which theapparatus is set, the power piston 19 will remain near the limit of itsdownward stroke, moving slightly up and down in the way described,thereby setting and resetting the apparatus by bringing the valve 14 toits initial position. As long as the temperature of the superheatedsteam iowing o-ver the co-il 2 remains above the limit for which theapparatus is set, the power piston 19 will remain near the limit of itsdownward stroke, and by remaining near thelimit of its downward strokeit will serve to keep the doors which admit air to the setting open forthe purpose of reducing the temperature of the superheated steam to thedesired point. i As 'soon as the temperature of the superheated steam isreduced to below the limit `for which the apparatus is set, the

valve 14 will remain closed, andthe power piston will then travel upwardto itsfinitial position.

The arrangement described regulatesthe temperature very 4closelyb-yovercoming the friction losses referred to above.' It will be obviousthat when the temperature rises to the predetermined point, the pressurein the chamber 6 will be obligedto overcome not only the resistance ofthe spring 11 but also the resistance due to the friction of the variousparts between the diaphragm and the valve 14. Or, to express 'itsomewhat` differently, the spring 11 is adjusted so as to produce apressure which .when added' to such frictional resistances will permitthe valve 14 to open when the predeterniined mined pressure in S5 ltemperature, and therefore thev predeteri" When the temperature dropsbelow `they predeterminedy point, however, the tendency of the spring 11toclosevalve'14 will be ref sistedto some extent bythe friction of theparts, so that the pressure in the chamber 6 must fall considerablybelow that required to open valve 14 before valve 14 can close. Thefriction of theparts, beingva constant resistance to themotion of thelever. 9 in both directions, is added to the pressure yof f f the spring11 to resist opening, and is subtracted from they pressure of thespring11 to resist closing. y

By providing'the additional counterpres sure derived from the piston38,1 `am enabled to neutralize thel frictional resistance so that thepressure tending toclosey the valve will be the same as the resistanceagainst its opening, since lthis counterpressure is applied only afterIthe `controlling mechanism operated by the pressure in chamber 6 hasoperated. r 4' v F or example, if it should be` assumed that the totalpressure in chamber 6 must be live hundred pounds in order toopen valve14 and that the resistance to this pressure is made up of ten pounds dueto the friction of the parts, and four hundred and ninety pounds duetothe spring 11, then when thel v valve 14 would close, unless my novelmechanisin is used. By arranging the'press'ure on piston-38 so that itwill be equivalent `,to

twenth'vgpounds on the chamber 6, orto more than twentypounds. then theeffect of the frictional losses will be nullified, or more thannullified, because the pressure tending to close the valve will be thetotal -of the spring 11, of e four hundred and eighty motor cylinder toescape when saidv valve is closed, to permit the member to return:toward normal position.`

5. In a device of the class described, a member, means to move themember towards normal position, a fluid-actuated motor comprising amotor cylinder and a motor piston therein, connected to the member andarranged to move the member out of normal position when fluid pressureis applied to the motor piston, a valve to control the application offluid pressure to the motor piston, a fluid-pressure-actuated deviceconnected to the valve to open the valve when the pressure on saiddevice reaches a predetermined amount, an auxiliary piston connected tosaid valve, means, independent of the fluidpressure-actuated device, toapply pressure to said auxiliary piston to close said valve when themotor piston has been moved, and means to permit the fluid in the motorcylinder to escape when said valve is closed, to permit the member toreturn toward normal position.

6. In a device of the class described, a member, means to move themember towards normal position, a fluid-actuatedv motor comprising amotor cylinder and a motor piston therein, connected to the member andarranged to move the member out of normall position when fluid pressureis applied to the motor piston, a valve to control the application offluid pressure to the motor piston, a fluidpressure-actuated deviceconnected to the valve to open the valve when the pressure on saiddevice reaches a predetermined amount, an auxiliary piston connected tosaid valve, means, operated by the motor piston, to apply pressure tosaid auxiliary piston to close said valve when the motor piston has beenmoved by the opening of said valve, and means to permit the fluid in themotor cylinder to escape when said valve is closed, to permit the memberto return toward normal position. 1

7. In a device of the class described, a member, means to move themember towards normal position, a fluid actuated motor, comprising amotor cylinder and a motor piston therein, connected to the member andarranged to move the member out of normal position when fluid pressureis applied to the motor piston, a valve to control the application ofHuid pressure to the motor piston, a Huid-pressure-actuated deviceconnected to the valve to open the valve when the pressure on saiddevice reaches apredetermined amount, means, independent of theliuid-pressure-actuated device, to close said valve, and apermanently-open outlet in said motor cylinder to permit the fluidtherein to esca-pe, to permit the member to return toward normalposition.

8. In a device of the class described, a valve, a pressure-actuateddevice, connections 'betweenthe lvalve and said devicear- 4 ranged toopen the valvewhen'the pressure on said device has-reached apredetermined ;4

amount, means to hold the valve onitsseat, and valve closingmeansindependentof the means to liold the valve on its seat and op-yerativeonly when thevalve lis, open, to` exert a closing pressure onsaid valve substar'i-4 tially equal to the frictional resistance of they l and the presthe lcla-ss described,- a`

pressure against the lever to move it away.

from normal position, andl a supplemental power device to move the levertoward normal position and operative lonly-after the lever has beenmoved away from normal position by the Huid-pressure device against thepressure of the constantly acting means. 10. In a device ofthe classdescribed, a motor and means to control the application of power to themotor, including a temperature-controlled fluid-pressure actuateddevice, a lever connected to said device to be moved by the expansion ofthe fluid in said device, constantly acting means to hold the` lever innormal position and a supplemental power device arranged to exertpressure on said lever to return it to normal position only after thelever has been moved outS of normal position by the fluid-pressuredevice against the pressure of the constantlyy acting means.

ll. In a device of 'the class described, aV fluid operated motor and avalve to control the application ofpower to the motor, a

lever connected to the valve, a spring to hold the lever innormalposition` wit-h'the valve closed, a fluid-pressure device subjected tovarying temperatures, a plunger arranged to be moved by the fluid'insaid device when the temperature rises, said plung.-

close the valve, and means to cause said supplemental power means'to` bethrown into operation only after the lever has been moved out of normalposit-ion to open the valve to actuate the motor, p i l 12. In a deviceof the class described, 4a member,'means to move the` member towardnormal position, a motor connectedto the member to move it out of normalposition,

and means tocontrol the application of power tothe motor, including alever, a fluida pressure actuated device to move the lever out' ofnormal position, means to move the lever Vtoward normal position andsupple vInenjal power means to move the lever toward i normal positionlWith a force lsubstantially equal tothe rictional resistance of theparts,

y and? means to render said supplemental power lmeans operative onlyafter the motor has *moved the member out of normal position,

said motor' being arranged to permit the member to moveback to normalposition When the power is shut olf by the lever,

whereby the member lmay be moved out of normal position andreturnedthereto m-k signed my name in the, .pres en`ce; of 'tivo supb-`f scribing Witnesses.

"Witnesses F. A. CONKLING. EDITH, CAMP.

DAVID e. JAooBUe,

